Update agent.py

agent.py

@@ -7,6 +7,8 @@ from langgraph.graph import StateGraph, START, END, MessagesState
 from langgraph.prebuilt import ToolNode, tools_condition
 from langchain_huggingface import HuggingFaceEndpoint, ChatHuggingFace
 from langchain_google_genai import ChatGoogleGenerativeAI
+from langchain_groq import ChatGroq
+
 
 HUGGINGFACEHUB_API_TOKEN = getenv("HUGGINGFACEHUB_API_TOKEN")